Patent US2131145A successfully refreshed from Google Patents.
US2131145A
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Process for increasing the reactivity of naturally or artificially shaped articles or materials and product obtained thereby
Assignee: IG Farbenindustrie AG
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Filing: 1935-09-12
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Granted: 1938-09-27
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Expires: 1955-09-12
Abstract
No abstract record available.
Inventors
- 👤 Schlack Paul
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:48
CPC Classifications
H; H05; H05K; H05K7/00; H05K7/02; H05K7/04; B; B44; B44F; B44F9/00; B44F9/08; C; C08; C08L; C08L89/00; C08L89/04; C08L89/06; D; D06; D06M; D06M13/00; D06M13/10; D06M13/11; D06M13/244; D06M13/248; D06M13/252; D06M13/322; D06M13/48; D06M13/487; D06P; D06P1/00; D06P1/44; D06P1/64; D06P1/642; D06P1/6426; D06P1/651; D06P1/65106; D06P1/65131; D06P1/655; D06P1/66; D06P3/00; D06P3/02; D06P3/04; D06P3/041; D06P3/06; D06P3/14; D06P3/16; D06P3/18; D06P3/82; D06P3/8204; D06P3/8219; D06P5/00; D06P5/22
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1941-09-26 | 1942-03-28 | 1942-09-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1945-09-26 | 1946-03-28 | 1946-09-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1949-09-26 | 1950-03-28 | 1950-09-27 | $7700.00 | Window Closed / Lapsed |